hmm, I understand the "why".
But I'm not sure it's a great idea to let the user be un-informed when they chose "proprietary" but got "nouveau" :/

What do you propose then? I'm not sure how we could clearly communicate this unless there is some pop up when the installer is first ran telling them what is going to happen and that they should probably update their config (and read the announcement regarding packaging changes)

I think one option is to not show the nvidia prop driver at all, if it's not supported?
But not sure how to do that based on hardware ID's and stuff

This pull request removes the proprietary driver from the menus, but if you read the previous pull request (#4019) @svartkanin was worried about backwards compatibility with older configs, hence why this is here.

As of driver release 590.48.01, they are no longer supporting the proprietary driver hence it was removed from the repositories which only leaves the open kernel module available and it only supports Turing+ hardware (GTX 1650/RTX 2000 and newer)

If we fall back to the open kernel module for these older configs and the user happens to have pre-Turing hardware, they're going to be met with a black screen when they boot after installation, which I find undesirable in my opinion. I'd rather someone end up getting the 'incorrect' but working graphics driver that they can fix themselves after the installation than them be met with a broken install that may leave a new user confused with a system they can't use.